添加项目文件。

IM.Commons/BaseSpecification.cs

@@ -0,0 +1,14 @@
+using System.Linq.Expressions;
+
+namespace IM.Commons
+{
+    public abstract class BaseSpecification<T, TResult> : ISpecification<T, TResult>
+    {
+        public Expression<Func<T, bool>> Criteria { get; private set; }
+
+        public List<Expression<Func<T, object>>> Includes { get; private set; }
+
+
+        public Expression<Func<T, TResult>> Select { get; private set; }
+    }
+}